Doubt in the touch interface of FT800

[RAMASUBBU]

Hi,
The connections i have given in my circuit


FT800 pin - 19 - XP to TFT pin 37 - Right electrode-differential analog
FT800 pin - 20 - YP to TFT pin 40 - Top electrode-differential analog
FT800 pin - 21 - XM to TFT pin 39 - Left electrode-differential analog
FT800 pin - 22 - YM to TFT pin 38 - Bottom electrode-differential analog

but i have refer the design of eve kit - https://download.mikroe.com/documents/a ... -v100a.pdf

It was this way

FT800 pin - 19 - XP to TFT pin 37 - Right electrode-differential analog
FT800 pin - 20 - YP to TFT pin 38 - Bottom electrode-differential analog
FT800 pin - 21 - XM to TFT pin 39 - Left electrode-differential analog
FT800 pin - 22 - YM to TFT pin 40 - Top electrode-differential analog


Which one is correct

Thanks & Regards ,
Ramasubbu.V

[darko.ilijevski]

Hello,

Pinout of our boards (both for connect EVE click and the connect EVE) is as on the site schematics and it's according to our libraries (everything works as expected). You have been looking at the generic FT800 datasheet probably and there you can see that Y Top and Y Bottom values seem inverted, but our libraries take care about the correct positioning. Those are merely the labels, you need to sample the data and act accordingly, so all you need to know is if the value goes from max to min or from min to max and if the value changes across the X axis or Y axis.

I hope it's more clear now...
Best regards

[RAMASUBBU]

Hi,

Thanks now its clear